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Finding the Fourth Proportional to 321,236.28, 443,321.91 and 185,289.93

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Solution

The fourth proportional to 321,236.28, 443,321.91 and 185,289.93 is: 255,709.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,236.28 : 443,321.91 = 185,289.93 : x
  2. Step 2: Convert to fraction form
    321,236.28/443,321.91 = 185,289.93/x
  3. Step 3: Cross multiply
    321,236.28x = 443,321.91 × 185,289.93
  4. Step 4: Simplify right side
    321,236.28x = 82,143,085,671.37
  5. Step 5: Solve for x
    x = 82,143,085,671.37/321,236.28
  6. Step 6: Final answer
    x = 255,709.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.